Heat supplying device for reverse combustion of scattered coal

Abstract

A heat supplying device for reverse combustion of scattered coal comprises a furnace top cover, a bosh, a fire bar, a dust cleaning channel, a scattered coal bed and an ignition coal briquette, wherein a coal inlet in the sidewall of the furnace top cover is connected to an outlet of a coal charging channel in a full welding manner; an inner cavity of the bosh communicates with an inner cavity ofthe dust cleaning channel to form a static pressure; the top surface of the inner cavity of the dust cleaning channel is on the same horizontal plane with the top surface of the fire bar; a central axis of the coal charging channel forms an included angle of 30-60 degrees with the horizontal plane; the inside diameter of the coal charging channel is 80-100mm; a central axis extending line of the coal charging channel and a central axis of the bosh are intersected in the center of the top surface of the scattered coal bed; the scattered coal bed is arranged above the fire bar; the ignition coalbriquette slides through the coal charging channel and then naturally falls into the center of the top surface of the scattered coal bed. The device is applicable to heat supplying for tobacco curing, dense baking and scattered leaf baking. The device has the advantages that coal is charged and dust is cleaned in one time; the coal charging operation is comfortable; the ignition is simple and easy; the dust is conveniently cleaned; the smoke CO emission is decreased by 75%, and thus 25% of fuel coal is saved; the device is close to a baking process cure to produce hot air, and the problem ofburning loss of a combustion fan can be solved.

Description

technical field [0001] The invention relates to a bulk or granular loose coal, one-time coal loading, a loose coal reverse combustion heat supply device whose combustion surface movement direction is opposite to the combustion air flow direction, and is suitable for tobacco leaf modulation dense flue-cured tobacco in the agricultural and rural fields It can be used in places where hot air is produced by burning clean coal with loose-leaf flue-cured tobacco. Background technique [0002] According to estimates, in 2012, the national tobacco planting area was about 21 million mu. According to the estimation of 15-20 mu / seat, there are about 1.2 million intensive tobacco-curing houses in the country. Taking 2.5 tons of tobacco leaves in the middle of the intensive barn as an example, the heating time lasts for 5 to 6 days. The situation of energy saving and emission reduction in the tobacco modulation industry is severe, and it is required that the intensive flue-cured tobacco...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems such as dark fire and normal burning of the scattered coal furnace, large radiation heat loss when the furnace door is opened, low thermal efficiency, poor furnace temperature control performance, frequent coal addition and ash removal, etc., the present invention designs a "coal charging channel for coal feeding". The extension line of the central axis and the central axis of the bosh intersect at the center of the top surface of the scattered coal bed" structural feature, the technical feature of "one-time coal charging, open flame reverse combustion", "coal burning without pretreatment, one-time coal charging outside the furnace; coal saving , low CO emissions; heating close to the baking curve; non-burning combustion-supporting fan" and other effects of scattered coal reverse combustion heating device

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